Limb mounting system for archery bow

Abstract

An archery bow includes a bow riser, a limb, a limb bolt and a pivot pin. The bow riser is formed at one end with a rearward portion that includes a cradle and a bridge spanning the cradle to form a passageway therebetween and a tunnel defined in an inner wall of the bridge. The limb bolt attaches a butt end of the limb to a forward portion of the bow riser. The pivot pin passes through the passageway in the rearward portion of the bow riser and positioned in the cradle of the rearward portion of the bow riser. Moreover, the pivot pin defines in a top a pair of recesses in which two limb members of the limb are nested respectively, and is formed on a bottom a pair of positioning studs together clasping opposite ends of the cradle of the rearward portion of the bow riser.

What is claimed is: 
     
         1 . An archery bow comprising:
 a bow riser formed at one end with a forward portion and a rearward portion; the rearward portion including a cradle and a substantially arched-shaped bridge spanning the cradle to form a passageway therebetween and a tunnel defined in an inner wall of the bridge and adjacent to the passageway;   a limb having a pair of limb members generally parallel to each other;   a limb bolt attaching a butt end of the limb to the forward portion of the bow riser; and   a pivot pin passing through the passageway in the rearward portion of the bow riser and positioned in the cradle of the rearward portion of the bow riser; the pivot pin defining in an upper surface thereof a pair of recesses in which the two limb members of the limb are nested respectively, and being formed on a lower surface thereof a pair of positioning studs together clasping opposite ends of the cradle of the rearward portion of the bow riser; and the positioning studs of the pivot pin being configured in shape and size to be able to pass through the tunnel in the inner wall of the bridge during assembly.   
     
     
         2 . An archery bow as recited in  claim 1 , wherein the pivot pin is made of plastic. 
     
     
         3 . An archery bow as recited in  claim 2 , wherein the pivot pin is made of nylon. 
     
     
         4 . An archery bow as recited in  claim 1 , wherein the limb is integrally formed in once piece with the two limb members of the limb connected at the butt end thereof. 
     
     
         5 . An archery bow as recited in  claim 1 , further comprising a limb cap positioned between the limb bolt and the butt end of the limb. 
     
     
         6 . An archery bow as recited in  claim 5 , wherein the two limb members of the limb are made of glass fiber. 
     
     
         7 . A limb mounting system for mounting a limb to a bow riser, wherein the limb has a pair of limb members; the bow riser is formed at one end with a rearward portion; the rearward portion including a cradle and a substantially arch-shaped bridge spanning the cradle to form a passageway therebetween and a tunnel defined in an inner wall of the bridge and adjacent to the passageway; the limb mounting system comprising:
 a pivot pin passing through the passageway in the rearward portion of the riser and positioned in the cradle of the rearward portion of the riser; the pivot pin defining in an upper surface thereof a pair of recesses in which the two limb members of the limb are nested respectively, and being formed on a lower surface thereof a pair of positioning studs together clasping opposite ends of the cradle of the rearward portion of the riser; and the positioning studs of the pivot pin being configured in shape and size to be able to pass through the tunnel in the inner wall of the bridge during assembly.   
     
     
         8 . A limb mounting system as recited in  claim 7 , wherein the pivot pin is made of plastic. 
     
     
         9 . A limb mounting system as recited in  claim 7 , further comprising a limb bolt attaching a butt end of the limb to the riser. 
     
     
         10 . A limb mounting system as recited in  claim 9 , further comprising a limb cap positioned between the limb bolt and the butt end of the limb.